April 27, 2023
Conference Paper

Resilience Assessment Framework For Electric Distribution Systems Performance Under Extreme Conditions


The devastating impact of extreme weather-related events is increasingly evident on power grids, especially on distribution grids. The severity of their potential impact calls for 1) developing a suitable resilience assessment framework to capture the system performance and 2) assessing relevant mitigative strategies to lessen the impact of such events. This paper proposes a framework to identify grid vulnerabilities using the energy-at-risk concept to select, disconnect and isolate grid portions due to a resilience event. The proposed framework mainly consists of two steps; i) processing the utility's available infrastructure, i.e., a network model, possible switching combinations, and outage information for those combinations, as a graph-based database, and ii) implementing a novel optimal switching algorithm leveraging database and grid simulated metrics. These switching actions are generated to implement load curtailment in a rolling manner during anticipated grid scarcity conditions. In this study, a test case is created using two taxonomy feeders and is simulated against an extreme temperature event, e.g., a long, relatively cold, and prolonged freeze peak, thereby creating stress on the grid. It is demonstrated that the proposed framework allows utilities to predict the energy-at-risk during such resilience events and design suitable outage management strategies.

Published: April 27, 2023


Poudel S., M. Mukherjee, R. Jinsiwale, and S. Hanif. 2023. Resilience Assessment Framework For Electric Distribution Systems Performance Under Extreme Conditions. In IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT 2023), January 16-19, 2023, Washington, DC, 1-5. Piscataway, New Jersey:IEEE. PNNL-SA-177103. doi:10.1109/ISGT51731.2023.10066427